188 lines
5.3 KiB
C
188 lines
5.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (C) 2012-2013 Intel Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/ioccom.h>
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#include <ctype.h>
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#include <err.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include <unistd.h>
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#include "nvmecontrol.h"
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/* Tables for command line parsing */
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static cmd_fn_t perftest;
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#define NONE 0xffffffffu
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static struct options {
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bool perthread;
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uint32_t threads;
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uint32_t size;
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uint32_t time;
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const char *op;
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const char *intr;
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const char *flags;
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const char *dev;
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} opt = {
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.perthread = false,
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.threads = 0,
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.size = 0,
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.time = 0,
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.op = NULL,
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.intr = NULL,
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.flags = NULL,
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.dev = NULL,
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};
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static const struct opts perftest_opts[] = {
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#define OPT(l, s, t, opt, addr, desc) { l, s, t, &opt.addr, desc }
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OPT("perthread", 'p', arg_none, opt, perthread,
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"Report per-thread results"),
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OPT("threads", 'n', arg_uint32, opt, threads,
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"Number of threads to run"),
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OPT("size", 's', arg_uint32, opt, size,
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"Size of the test"),
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OPT("time", 't', arg_uint32, opt, time,
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"How long to run the test in seconds"),
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OPT("operation", 'o', arg_string, opt, op,
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"Operation type: 'read' or 'write'"),
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OPT("interrupt", 'i', arg_string, opt, intr,
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"Interrupt mode: 'intr' or 'wait'"),
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OPT("flags", 'f', arg_string, opt, flags,
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"Turn on testing flags: refthread"),
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{ NULL, 0, arg_none, NULL, NULL }
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};
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#undef OPT
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static const struct args perftest_args[] = {
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{ arg_string, &opt.dev, "namespace-id" },
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{ arg_none, NULL, NULL },
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};
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static struct cmd perftest_cmd = {
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.name = "perftest",
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.fn = perftest,
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.descr = "Perform low-level performance testing",
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.ctx_size = sizeof(opt),
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.opts = perftest_opts,
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.args = perftest_args,
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};
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CMD_COMMAND(perftest_cmd);
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/* End of tables for command line parsing */
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static void
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print_perftest(struct nvme_io_test *io_test, bool perthread)
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{
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uint64_t io_completed = 0, iops, mbps;
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uint32_t i;
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for (i = 0; i < io_test->num_threads; i++)
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io_completed += io_test->io_completed[i];
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iops = io_completed/io_test->time;
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mbps = iops * io_test->size / (1024*1024);
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printf("Threads: %2d Size: %6d %5s Time: %3d IO/s: %7ju MB/s: %4ju\n",
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io_test->num_threads, io_test->size,
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io_test->opc == NVME_OPC_READ ? "READ" : "WRITE",
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io_test->time, (uintmax_t)iops, (uintmax_t)mbps);
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if (perthread)
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for (i = 0; i < io_test->num_threads; i++)
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printf("\t%3d: %8ju IO/s\n", i,
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(uintmax_t)io_test->io_completed[i]/io_test->time);
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}
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static void
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perftest(const struct cmd *f, int argc, char *argv[])
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{
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struct nvme_io_test io_test;
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int fd;
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u_long ioctl_cmd = NVME_IO_TEST;
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memset(&io_test, 0, sizeof(io_test));
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if (arg_parse(argc, argv, f))
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return;
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if (opt.op == NULL)
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arg_help(argc, argv, f);
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if (opt.flags != NULL && strcmp(opt.flags, "refthread") == 0)
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io_test.flags |= NVME_TEST_FLAG_REFTHREAD;
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if (opt.intr != NULL) {
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if (strcmp(opt.intr, "bio") == 0 ||
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strcmp(opt.intr, "wait") == 0)
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ioctl_cmd = NVME_BIO_TEST;
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else if (strcmp(opt.intr, "io") == 0 ||
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strcmp(opt.intr, "intr") == 0)
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ioctl_cmd = NVME_IO_TEST;
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else {
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fprintf(stderr, "Unknown interrupt test type %s\n", opt.intr);
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arg_help(argc, argv, f);
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}
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}
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if (opt.threads <= 0 || opt.threads > 128) {
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fprintf(stderr, "Bad number of threads %d\n", opt.threads);
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arg_help(argc, argv, f);
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}
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io_test.num_threads = opt.threads;
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if (strcasecmp(opt.op, "read") == 0)
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io_test.opc = NVME_OPC_READ;
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else if (strcasecmp(opt.op, "write") == 0)
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io_test.opc = NVME_OPC_WRITE;
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else {
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fprintf(stderr, "\"%s\" not valid opcode.\n", opt.op);
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arg_help(argc, argv, f);
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}
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if (opt.time == 0) {
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fprintf(stderr, "No time speciifed\n");
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arg_help(argc, argv, f);
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}
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io_test.time = opt.time;
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io_test.size = opt.size;
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open_dev(opt.dev, &fd, 1, 1);
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if (ioctl(fd, ioctl_cmd, &io_test) < 0)
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err(EX_IOERR, "ioctl NVME_IO_TEST failed");
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close(fd);
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print_perftest(&io_test, opt.perthread);
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exit(0);
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}
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